Question Library

When an atom undergoes a beta decay, the atomic number of the nucleus

When \(^{210}_{82}Pb\) decays to \(^{206}_{80}Pb\), it emits

A glass bottle of initial volume 2 x 10\(^4\) cm\(^3\) is heated from 20ºC to 50ºC. If the linear expansivity of glass is 9 x 10\(^{-6}\)K\(^{-1}\), the volume of the bottle at 50ºC is

The process of detecting a pin mistakenly swallowed by a child is X-ray

A piece of radioactive material contains 1000 atmos. If its half -life is 20seconds, the time taken for 125 atoms to remain is

A metal of volume 40 cm\(^3\) is heated from 30 ^\circc to 90 ^\circc, the increase in volume is [Linear expansivity of the metal = 2.0 x 10\(^{-5}\)K\(^{-1}\)]

A radioactive isotope has a decay constant of 10-5s4. Calculate half life

During the nuclear reaction described by \(^{235}_{92}\)W → \(^{235}_{93}\)X → \(^{231}_{91}\)Y The particles emitted are respectively

the time it will take a certain radioactive material with a half-life of 50 days to reduce to 1/32of its original number is

A radioisotope has a decay constant of 10\(^{-7}\)s\(^{-1}\). The average life of the radioisotope is

The count rate of a radioactive material is 800 count/min. If the half-life of the material is 4 days, what would the count rate be in 16 days later

The percentage of the original nuclei of the sample of a radioactive substance left after 5 half - lives is

If ray travelling in air is incident on a transparent medium as shown in the diagram, the refractive index of the medium is given as

If the fraction of the atoms of a radioactive material left after 120years is 1/64, what is the half-life of the material?

In the Rutherford scattering experiment, a beam of alpha particles was fired at a thin gold film with some of the particles being considerably deflected. This shows that